@isTest
public class SchedulableContactUpsertTest
{
    static testMethod void testschedule() 
    {
        //For Previous Implementation...        
        Test.StartTest();
        SchedulableContactUpsert bs = new SchedulableContactUpsert();
        string sch =' 0 0 13 * * ?';
        system.schedule('Test',sch,bs);
        Test.stopTest();
    }
}